A total of 935 were built, making this one of the most-produced classes of British steam locomotive.

[1] The Austerity 2-8-0 was based on the LMS Stanier Class 8F, which until that point had been the government's standard design.

[citation needed] The North British Locomotive Company (NBL) of Glasgow built 545 (split between their two works at Hyde Park and Queen's Park) and the Vulcan Foundry (VF) of Newton-le-Willows, Lancashire, built 390.

NBL builder's plates were not all in correct sequence, and were mixed up between the two works as well as between batches.

The other 184 locomotives remained in mainland Europe, mostly working in and around the Netherlands for Nederlandse Spoorwegen.

It was overhauled to its original condition, finished in 2007, which involved building a new cab and tender, to become BR "No.

After test runs, 90733 ran its first passenger train on Monday 23 July 2007.